Improvement in lamps



STATES PATENT EDWARD L. LAMBIE, OF WASHINGTON, DISTRICT OF COLUMBIA, ASSIGNOR OF ONE-HALF HIS RIGHT TO O. T. THOMPSON, OF SAME PLACE.

IMPROVEMENT IN LAMPS.

Specification forming part of Letters Patent No. 125,058, dated March 26, 1872.

Specification describing anew and Improved Lamp, invented by EDWARD L. LAMBIE, of the eityof Vashington and District of Columbia.

This invention consists in placing a diaphragm in the body of the lamp, made airtight, to prevent any communication between the oil-chamber and the lighted end ot the wick, as will be hereinafter more fully explained.

Figure lis a vertical section of the lamp. Fig. 2 is a detached view of the wick-tube, showingthe section of it at C c. Fig 3 is a View of the diaphragm and its dependent tube.

Similar letters in all the figures denote the same parts.v A

In the drawing, A represents the body of the lamp, which may be of any suitable material, having in one of its sides a tube, a, eX- tending through the diaphragm B into the oilchamber D, which tube is connected with the diaphragm in any manner, so that the joint will be air-tight; it may be made independent of either the shell or the diaphragm, and set into them by screw-threads; orif the diaphragm should be eoniined to a small space in the interior, as shown at A A in dotted lines, then a simple opening, as at et', will be all that will be required. The diaphragm B has a tube, b, dependent from thelower side, extending down a short distance. The diaphragm willbe made air-tight around its circumference. This, in metal lamps, may be by soldering, or in any convenient manner. C is a wicktube, made flat in this case from the end outside to a short distance abovethe diaphragm, where it is made round, to it neatly into the tube of the diaphragm, to prevent any oil or uid from passing through between them. The wick-tube may be made dat all the way down, in which event the diaphragm tube must be made to correspond with it. I do not conne myselfto a particular shape. D is the oil-chamber. E, the air-space, above the diaphragm, at whatever point the same may be located. a a', the tube, to admit oil or any other Hui-d. bis the diaphragm-tube. c, the extensionof the wicktube.

The explanation of the operation of this lamp is very easily understood. rllhe wick being placed in 'the tube, the latter can be shoved down into the diaphragm-tube, and the burner, which may be of any form or character, will bc screwed down; the uid will be introduced through the tube a or a', as the case may be; the lamp is then ready for use. Should the lamp be overturned the fluid will not communicate withl the upper chamber, except in a slight degree through the wick, and notin sufficient duantity to endanger an explosion.

Having fully described my invention, what I claim, and desire to secure by Letters Patent of the United States, is-

The lamp A, having its chamber divided by a diaphragm, combined with the double tube, substantially as and for the. purpose described.

E. L. LAMBIE.

Witnesses 'II'. M. MGGREW,

O. T. THOMPSON. 

